// Copyright © 2023 Ory Corp
// SPDX-License-Identifier: Apache-2.0

package passkey_test

import (
	"bytes"
	"context"
	_ "embed"
	"fmt"
	"net/http"
	"net/http/httptest"
	"net/url"
	"slices"
	"testing"

	"github.com/gofrs/uuid"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"github.com/tidwall/gjson"

	"github.com/ory/x/configx"

	"github.com/ory/kratos/driver/config"
	"github.com/ory/kratos/identity"
	"github.com/ory/kratos/pkg"
	kratos "github.com/ory/kratos/pkg/httpclient"
	"github.com/ory/kratos/pkg/registrationhelpers"
	"github.com/ory/kratos/pkg/testhelpers"
	"github.com/ory/kratos/selfservice/flow"
	"github.com/ory/kratos/selfservice/flow/registration"
	"github.com/ory/kratos/text"
	"github.com/ory/kratos/ui/node"
	"github.com/ory/x/assertx"
	"github.com/ory/x/contextx"
	"github.com/ory/x/ioutilx"
	"github.com/ory/x/randx"
	"github.com/ory/x/snapshotx"
	"github.com/ory/x/sqlxx"
)

var (
	flows = []string{"spa", "browser", "api"}

	//go:embed fixtures/registration/success/browser/response.json
	registrationFixtureSuccessResponse []byte

	//go:embed fixtures/registration/success/browser/internal_context.json
	registrationFixtureSuccessBrowserInternalContext []byte

	//go:embed fixtures/registration/success/android/response.json
	registrationFixtureSuccessAndroidResponse []byte

	//go:embed fixtures/registration/success/android/internal_context.json
	registrationFixtureSuccessAndroidInternalContext []byte

	//go:embed fixtures/registration/failure/internal_context_missing_user_id.json
	registrationFixtureFailureInternalContextMissingUserID []byte

	//go:embed fixtures/registration/failure/internal_context_wrong_user_id.json
	registrationFixtureFailureInternalContextWrongUserID []byte
)

func flowIsSPA(flow string) bool {
	return flow == "spa"
}

func TestRegistration(t *testing.T) {
	t.Parallel()

	t.Run("AssertCommonErrorCases", func(t *testing.T) {
		registrationhelpers.AssertCommonErrorCases(t, flows)
	})

	t.Run("AssertRegistrationRespectsValidation", func(t *testing.T) {
		t.Parallel()
		reg := newRegistrationRegistry(t)
		registrationhelpers.AssertRegistrationRespectsValidation(t, reg, flows, func(v url.Values) {
			v.Del("traits.foobar")
			v.Set(node.PasskeyRegister, "{}")
			v.Del("method")
		})
	})

	t.Run("AssertCSRFFailures", func(t *testing.T) {
		t.Parallel()
		// Use the shared helper for browser and spa flows (they already provide
		// the WebAuthn internal context via the UI flow initialization).
		reg := newRegistrationRegistry(t)
		registrationhelpers.AssertCSRFFailures(t, reg, []string{"spa", "browser"}, func(v url.Values) {
			v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
			v.Del("method")
		})

		// Prepare API flow once and persist the internal context so the
		// subsequent header-mangling subtests can reuse it.
		fix := newRegistrationFixture(t)
		apiClient := testhelpers.NewDebugClient(t)
		f := testhelpers.InitializeRegistrationFlowViaAPI(t, apiClient, fix.publicTS)

		interim, err := fix.reg.RegistrationFlowPersister().GetRegistrationFlow(t.Context(), uuid.FromStringOrNil(f.Id))
		require.NoError(t, err)
		interim.InternalContext = registrationFixtureSuccessBrowserInternalContext
		require.NoError(t, fix.reg.RegistrationFlowPersister().UpdateRegistrationFlow(t.Context(), interim))

		values := url.Values{
			"csrf_token":      {"invalid_token"},
			"traits.username": {testhelpers.RandomEmail()},
			"traits.foobar":   {"bar"},
		}
		values.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
		values.Del("method")

		// Check that missing CSRF passes for API (registration happens)
		actual, res := testhelpers.RegistrationMakeRequest(t, true, false, f, apiClient, testhelpers.EncodeFormAsJSON(t, true, values))
		require.EqualValues(t, http.StatusOK, res.StatusCode)
		assert.NotEmpty(t, gjson.Get(actual, "identity.id").Raw, "%s", actual)

		// Now test the specific CSRF error causes for API flows: adding Cookie and Origin headers
		for _, tc := range []struct {
			mod    func(http.Header)
			exp    string
			expKey string
		}{
			{
				mod:    func(h http.Header) { h.Add("Cookie", "name=bar") },
				exp:    "The HTTP Request Header included the \"Cookie\" key",
				expKey: "Cookie",
			},
			{
				mod:    func(h http.Header) { h.Add("Origin", "www.bar.com") },
				exp:    "The HTTP Request Header included the \"Origin\" key",
				expKey: "Origin",
			},
		} {
			// Name this test to match the project's existing case naming and mark it as a local variant.
			t.Run(fmt.Sprintf("case=should_fail_with_correct_CSRF_error_cause_local/type=api/%s", tc.expKey), func(t *testing.T) {
				f2 := testhelpers.InitializeRegistrationFlowViaAPI(t, apiClient, fix.publicTS)

				// attach internal context to the new flow
				interim2, err := fix.reg.RegistrationFlowPersister().GetRegistrationFlow(t.Context(), uuid.FromStringOrNil(f2.Id))
				require.NoError(t, err)
				interim2.InternalContext = registrationFixtureSuccessBrowserInternalContext
				require.NoError(t, fix.reg.RegistrationFlowPersister().UpdateRegistrationFlow(t.Context(), interim2))

				req, err := http.NewRequest("POST", f2.Ui.Action, bytes.NewBufferString(testhelpers.EncodeFormAsJSON(t, true, values)))
				require.NoError(t, err)
				req.Header.Set("Accept", "application/json")
				req.Header.Set("Content-Type", "application/json")
				tc.mod(req.Header)

				res, err := apiClient.Do(req)
				require.NoError(t, err)
				defer func() { _ = res.Body.Close() }()

				bodyBytes := ioutilx.MustReadAll(res.Body)
				actual := string(bodyBytes)
				require.EqualValues(t, http.StatusBadRequest, res.StatusCode)

				// Extract the first ui message text (API error payload)
				msg := gjson.Get(actual, "ui.messages.0.text").String()
				// Ensure the API error mentions the header key we added (Cookie/Origin)
				assert.Contains(t, msg, tc.expKey, "actual payload: %s", actual)
			})
		}
	})

	t.Run("AssertSchemaDoesNotExist", func(t *testing.T) {
		t.Parallel()
		reg := newRegistrationRegistry(t)
		registrationhelpers.AssertSchemaDoesNotExist(t, reg, flows, func(v url.Values) {
			v.Set(node.PasskeyRegister, "{}")
			v.Del("method")
		})
	})

	t.Run("case=passkey button does not exist when passwordless is disabled", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t, configx.WithValue(config.ViperKeyPasskeyEnabled, false))
		uiFlows := []string{"spa", "browser"}
		for _, flowType := range uiFlows {
			flowType := flowType
			t.Run(flowType, func(t *testing.T) {
				t.Parallel()
				client := testhelpers.NewClientWithCookies(t)
				flo := testhelpers.InitializeRegistrationFlowViaBrowser(t, client, fix.publicTS, flowIsSPA(flowType), false, false)
				testhelpers.SnapshotTExcept(t, flo.Ui.Nodes, []string{
					"0.attributes.value",
				})
			})
		}
	})

	t.Run("case=passkey button exists", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		uiFlows := []string{"spa", "browser"}
		for _, flowType := range uiFlows {
			flowType := flowType
			t.Run(flowType, func(t *testing.T) {
				t.Parallel()
				client := testhelpers.NewClientWithCookies(t)
				f := testhelpers.InitializeRegistrationFlowViaBrowser(t, client, fix.publicTS, flowIsSPA(flowType), false, false)
				testhelpers.SnapshotTExcept(t, f.Ui.Nodes, []string{
					"0.attributes.value",
					"3.attributes.src",
					"3.attributes.nonce",
					"6.attributes.value",
				})
			})
		}
	})

	t.Run("case=should return an error because not passing validation", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		email := testhelpers.RandomEmail()

		values := func(v url.Values) {
			v.Set("traits.username", email)
			v.Del("traits.foobar")
			v.Set(node.PasskeyRegister, "{}")
			v.Del("method")
		}

		for _, f := range flows {
			t.Run("type="+f, func(t *testing.T) {
				actual := registrationhelpers.ExpectValidationError(t.Context(), t, fix.publicTS, fix.conf, f, values)

				assert.NotEmpty(t, gjson.Get(actual, "id").String(), "%s", actual)
				assert.Contains(t, gjson.Get(actual, "ui.action").String(), fix.publicTS.URL+registration.RouteSubmitFlow, "%s", actual)
				registrationhelpers.CheckFormContent(t, []byte(actual), "csrf_token", "traits.username", "traits.foobar")
				assert.Contains(t, gjson.Get(actual, "ui.nodes.#(attributes.name==traits.foobar).messages.0").String(), `Property foobar is missing`, "%s", actual)
				assert.Equal(t, email, gjson.Get(actual, "ui.nodes.#(attributes.name==traits.username).attributes.value").String(), "%s", actual)
			})
		}
	})

	t.Run("case=should reject invalid transient payload", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		email := testhelpers.RandomEmail()

		values := func(v url.Values) {
			v.Set("traits.username", email)
			v.Set("traits.foobar", "bar")
			v.Set("transient_payload", "42")
			v.Set(node.PasskeyRegister, "{}")
			v.Del("method")
		}

		for _, f := range flows {
			t.Run("type="+f, func(t *testing.T) {
				actual := registrationhelpers.ExpectValidationError(t.Context(), t, fix.publicTS, fix.conf, f, values)

				assert.NotEmptyf(t, gjson.Get(actual, "id").String(), "%s", actual)
				assert.Containsf(t, gjson.Get(actual, "ui.action").String(), fix.publicTS.URL+registration.RouteSubmitFlow, "%s", actual)
				registrationhelpers.CheckFormContent(t, []byte(actual), "csrf_token", "traits.username", "traits.foobar")
				assert.Equalf(t, "bar", gjson.Get(actual, "ui.nodes.#(attributes.name==traits.foobar).attributes.value").String(), "%s", actual)
				assert.Equalf(t, email, gjson.Get(actual, "ui.nodes.#(attributes.name==traits.username).attributes.value").String(), "%s", actual)
				assert.Equalf(t, int64(4000026), gjson.Get(actual, "ui.nodes.#(attributes.name==transient_payload).messages.0.id").Int(), "%s", actual)
			})
		}
	})

	t.Run("case=should return an error because passkey response is invalid", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		email := testhelpers.RandomEmail()

		values := func(v url.Values) {
			v.Set("traits.username", email)
			v.Set("traits.foobar", "bazbar")
			v.Set(node.PasskeyRegister, "invalid")
			v.Set("method", "passkey")
		}

		for _, f := range flows {
			t.Run("type="+f, func(t *testing.T) {
				actual, _, _ := fix.submitPasskeyRegistration(t.Context(), t, f, testhelpers.NewClientWithCookies(t), values)
				assert.NotEmpty(t, gjson.Get(actual, "id").String(), "%s", actual)
				assert.Contains(t, gjson.Get(actual, "ui.action").String(), fix.publicTS.URL+registration.RouteSubmitFlow, "%s", actual)
				registrationhelpers.CheckFormContent(t, []byte(actual), node.PasskeyRegister, "csrf_token", "traits.username", "traits.foobar")
				assert.Equal(t, "bazbar", gjson.Get(actual, "ui.nodes.#(attributes.name==traits.foobar).attributes.value").String(), "%s", actual)
				assert.Equal(t, email, gjson.Get(actual, "ui.nodes.#(attributes.name==traits.username).attributes.value").String(), "%s", actual)
				assert.Contains(t, gjson.Get(actual, "ui.messages.0").String(), `Unable to parse WebAuthn response: Parse error for Registration`, "%s", actual)
			})
		}
	})

	t.Run("case=should return an error because internal context is invalid", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		email := testhelpers.RandomEmail()

		for _, tc := range []struct {
			name            string
			internalContext string
		}{{
			name:            "invalid json",
			internalContext: "invalid",
		}, {
			name:            "missing user ID",
			internalContext: string(registrationFixtureFailureInternalContextMissingUserID),
		}, {
			name:            "wrong user ID",
			internalContext: string(registrationFixtureFailureInternalContextWrongUserID),
		}} {
			tc := tc
			t.Run("context="+tc.name, func(t *testing.T) {
				values := func(v url.Values) {
					v.Set("traits.username", email)
					v.Set("traits.foobar", "bazbar")
					v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
					v.Del("method")
				}

				for _, f := range flows {
					t.Run("type="+f, func(t *testing.T) {
						actual, _, _ := fix.submitPasskeyRegistration(t.Context(), t, f, testhelpers.NewClientWithCookies(t), values,
							withInternalContext(sqlxx.JSONRawMessage(tc.internalContext)))
						if flowIsSPA(f) || f == "api" {
							assert.Equal(t, "Internal Server Error", gjson.Get(actual, "error.status").String(), "%s", actual)
						} else {
							// Browser uses top-level status
							assert.Equal(t, "Internal Server Error", gjson.Get(actual, "status").String(), "%s", actual)
						}
					})
				}
			})
		}
	})

	t.Run("case=should fail to create identity if schema is missing the identifier", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		testhelpers.SetDefaultIdentitySchema(fix.conf, "file://./stub/noid.schema.json")
		email := testhelpers.RandomEmail()

		uiFlows := []string{"spa", "browser"}
		for _, f := range uiFlows {
			t.Run("type="+f, func(t *testing.T) {
				client := testhelpers.NewClientWithCookies(t)
				isSPA := f == "spa"
				regFlow := testhelpers.InitializeRegistrationFlowViaBrowser(t, client, fix.publicTS, isSPA, false, false)

				// fill out traits and click on "sign up with passkey"
				urlValues := testhelpers.SDKFormFieldsToURLValues(regFlow.Ui.Nodes)
				urlValues.Set("traits.email", email)
				urlValues.Set("method", "passkey")
				actual, _ := testhelpers.RegistrationMakeRequest(t, false, isSPA, regFlow, client, urlValues.Encode())

				assert.Contains(t, gjson.Get(actual, "ui.action").String(), fix.publicTS.URL+registration.RouteSubmitFlow, "%s", actual)
				registrationhelpers.CheckFormContent(t, []byte(actual), "csrf_token", "traits.email")
				assert.Equal(t, text.NewErrorValidationRegistrationNoStrategyFound().Text, gjson.Get(actual, "ui.messages.0.text").String(), "%s", actual)
			})
		}
	})

	t.Run("case=registration flow with multiple flagged traits returns all candidate field names", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		testhelpers.SetDefaultIdentitySchema(fix.conf, "file://./stub/registration-multi-identifier.schema.json")

		uiFlows := []string{"spa", "browser"}
		for _, f := range uiFlows {
			t.Run("type="+f, func(t *testing.T) {
				t.Parallel()
				client := testhelpers.NewClientWithCookies(t)
				isSPA := f == "spa"

				// Before the multi-trait fix this would 500 inside InitializeRegistrationFlowViaBrowser
				// with "no identifier found".
				regFlow := testhelpers.InitializeRegistrationFlowViaBrowser(t, client, fix.publicTS, isSPA, false, false)

				// Find the passkey_create_data hidden input node and extract its value.
				var createDataValue string
				for _, n := range regFlow.Ui.Nodes {
					attrs := n.Attributes.UiNodeInputAttributes
					if attrs == nil {
						continue
					}
					if attrs.Name != node.PasskeyCreateData {
						continue
					}
					if v, ok := attrs.Value.(string); ok {
						createDataValue = v
					}
					break
				}

				require.NotEmpty(t, createDataValue, "passkey_create_data node must be present and have a non-empty value")

				// Both flagged trait paths must appear in displayNameFieldNames.
				fieldNames := gjson.Get(createDataValue, "displayNameFieldNames")
				require.True(t, fieldNames.IsArray(), "displayNameFieldNames must be a JSON array, got: %s", createDataValue)

				names := make([]string, 0, len(fieldNames.Array()))
				for _, r := range fieldNames.Array() {
					names = append(names, r.String())
				}
				assert.True(t, slices.Contains(names, "traits.email"),
					"traits.email must be in displayNameFieldNames, got: %v", names)
				assert.True(t, slices.Contains(names, "traits.phone"),
					"traits.phone must be in displayNameFieldNames, got: %v", names)

				// Backward compatibility: the singular field stays populated with
				// the alphabetically-first candidate so custom UIs that only read
				// it continue to work.
				assert.Equal(t, "traits.email", gjson.Get(createDataValue, "displayNameFieldName").String(),
					"displayNameFieldName must be the first sorted candidate")
			})
		}
	})

	getPrefix := func(f string) (prefix string) {
		if f == "spa" || f == "api" {
			prefix = "session."
		}
		return
	}

	t.Run("successful registration", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		t.Cleanup(fix.disableSessionAfterRegistration)

		values := func(email string) func(v url.Values) {
			return func(v url.Values) {
				v.Set("traits.username", email)
				v.Set("traits.foobar", "bazbar")
				v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
				v.Del("method")
			}
		}

		t.Run("case=should create the identity but not a session", func(t *testing.T) {
			fix.useRedirNoSessionTS()
			t.Cleanup(fix.useRedirTS)
			fix.disableSessionAfterRegistration()

			for _, f := range flows {
				t.Run("type="+f, func(t *testing.T) {
					email := f + "-" + testhelpers.RandomEmail()
					userID := f + "-user-" + randx.MustString(8, randx.AlphaNum)
					actual := fix.makeSuccessfulRegistration(t, f, fix.redirNoSessionTS.URL+"/registration-return-ts", values(email), withUserID(userID))

					if f == "spa" || f == "api" {
						assert.Equal(t, email, gjson.Get(actual, "identity.traits.username").String(), "%s", actual)
						assert.False(t, gjson.Get(actual, "session").Exists(), "because the registration yielded no session, the user is not expected to be signed in: %s", actual)
					} else {
						assert.Equal(t, "null\n", actual, "because the registration yielded no session, the user is not expected to be signed in: %s", actual)
					}

					i, _, err := fix.reg.PrivilegedIdentityPool().FindByCredentialsIdentifier(t.Context(), identity.CredentialsTypePasskey, userID)
					require.NoError(t, err)
					assert.Equal(t, "aal1", i.InternalAvailableAAL.String)
					assert.Equal(t, email, gjson.GetBytes(i.Traits, "username").String(), "%s", actual)
				})
			}
		})

		t.Run("case=should accept valid transient payload", func(t *testing.T) {
			fix.useRedirNoSessionTS()
			t.Cleanup(fix.useRedirTS)
			fix.disableSessionAfterRegistration()

			for _, f := range []string{"spa", "browser", "api"} {
				t.Run("type="+f, func(t *testing.T) {
					email := testhelpers.RandomEmail()
					userID := f + "-user-" + randx.MustString(8, randx.AlphaNum)
					actual := fix.makeSuccessfulRegistration(t, f, fix.redirNoSessionTS.URL+"/registration-return-ts", func(v url.Values) {
						values(email)(v)
						v.Set("transient_payload.stuff", "42")
					}, withUserID(userID))

					if f == "spa" {
						assert.Equal(t, email, gjson.Get(actual, "identity.traits.username").String(), "%s", actual)
						assert.False(t, gjson.Get(actual, "session").Exists(), "because the registration yielded no session, the user is not expected to be signed in: %s", actual)
					} else {
						if f == "api" {
							assert.Equal(t, email, gjson.Get(actual, "identity.traits.username").String(), "%s", actual)
							assert.False(t, gjson.Get(actual, "session").Exists(), "because the registration yielded no session, the user is not expected to be signed in: %s", actual)
						} else {
							assert.Equal(t, "null\n", actual, "because the registration yielded no session, the user is not expected to be signed in: %s", actual)
						}
					}

					i, _, err := fix.reg.PrivilegedIdentityPool().FindByCredentialsIdentifier(t.Context(), identity.CredentialsTypePasskey, userID)
					require.NoError(t, err)
					assert.Equal(t, email, gjson.GetBytes(i.Traits, "username").String(), "%s", actual)

					if f == "spa" {
						assert.EqualValues(t, flow.ContinueWithActionRedirectBrowserToString, gjson.Get(actual, "continue_with.0.action").String(), "%s", actual)
						assert.Contains(t, gjson.Get(actual, "continue_with.0.redirect_browser_to").String(), fix.redirNoSessionTS.URL+"/registration-return-ts", "%s", actual)
					} else {
						assert.Empty(t, gjson.Get(actual, "continue_with").Array(), "%s", actual)
					}
				})
			}
		})

		t.Run("case=should create the identity and a session and use the correct schema", func(t *testing.T) {
			fix.enableSessionAfterRegistration()
			fix.conf.MustSet(t.Context(), config.ViperKeyDefaultIdentitySchemaID, "advanced-user")
			fix.conf.MustSet(t.Context(), config.ViperKeyIdentitySchemas, config.Schemas{
				{ID: "does-not-exist", URL: "file://./stub/profile.schema.json"},
				{ID: "advanced-user", URL: "file://./stub/registration.schema.json"},
			})

			for _, f := range []string{"spa", "browser", "api"} {
				t.Run("type="+f, func(t *testing.T) {
					email := testhelpers.RandomEmail()
					userID := f + "-user-" + randx.MustString(8, randx.AlphaNum)
					actual := fix.makeSuccessfulRegistration(t, f, fix.redirTS.URL+"/registration-return-ts", values(email), withUserID(userID))

					prefix := getPrefix(f)

					assert.Equal(t, email, gjson.Get(actual, prefix+"identity.traits.username").String(), "%s", actual)
					assert.True(t, gjson.Get(actual, prefix+"active").Bool(), "%s", actual)

					i, _, err := fix.reg.PrivilegedIdentityPool().FindByCredentialsIdentifier(t.Context(), identity.CredentialsTypePasskey, userID)
					require.NoError(t, err)
					assert.Equal(t, email, gjson.GetBytes(i.Traits, "username").String(), "%s", actual)
				})
			}
		})

		t.Run("case=not able to create the same account twice", func(t *testing.T) {
			fix.enableSessionAfterRegistration()
			testhelpers.SetDefaultIdentitySchema(fix.conf, "file://./stub/registration.schema.json")

			for _, f := range []string{"spa", "browser", "api"} {
				t.Run("type="+f, func(t *testing.T) {
					email := testhelpers.RandomEmail()
					userID := f + "-user-" + randx.MustString(8, randx.AlphaNum)
					actual := fix.makeSuccessfulRegistration(t, f, fix.redirTS.URL+"/registration-return-ts", values(email), withUserID(userID))
					assert.True(t, gjson.Get(actual, getPrefix(f)+"active").Bool(), "%s", actual)

					actual, _, _ = fix.makeRegistration(t, f, values(email))
					assert.Contains(t, gjson.Get(actual, "ui.action").String(), fix.publicTS.URL+registration.RouteSubmitFlow, "%s", actual)
					registrationhelpers.CheckFormContent(t, []byte(actual), "csrf_token", "traits.username")
					assert.Equal(t,
						"You tried signing in with "+email+" which is already in use by another account. You can sign in using your passkey.",
						gjson.Get(actual, "ui.messages.0.text").String(), "%s", actual)
				})
			}
		})

		t.Run("case=reset previous form errors", func(t *testing.T) {
			fix.enableSessionAfterRegistration()
			testhelpers.SetDefaultIdentitySchema(fix.conf, "file://./stub/registration.schema.json")

			for _, f := range []string{"spa", "browser", "api"} {
				t.Run("type="+f, func(t *testing.T) {
					email := testhelpers.RandomEmail()
					actual, _, _ := fix.makeRegistration(t, f, func(v url.Values) {
						v.Del("traits.username")
						v.Set("traits.foobar", "bazbar")
						v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
					})
					registrationhelpers.CheckFormContent(t, []byte(actual), "csrf_token", "traits.username", "traits.foobar")
					assert.Contains(t, gjson.Get(actual, "ui.nodes.#(attributes.name==traits.username).messages.0").String(), `Property username is missing`, "%s", actual)

					actual, _, _ = fix.makeRegistration(t, f, func(v url.Values) {
						v.Set("traits.username", email)
						v.Del("traits.foobar")
						v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
						v.Del("method")
					})
					registrationhelpers.CheckFormContent(t, []byte(actual), "csrf_token", "traits.username", "traits.foobar")
					assert.Contains(t, gjson.Get(actual, "ui.nodes.#(attributes.name==traits.foobar).messages.0").String(), `Property foobar is missing`, "%s", actual)
					assert.Empty(t, gjson.Get(actual, "ui.nodes.#(attributes.name==traits.username).messages").Array())
					assert.Empty(t, gjson.Get(actual, "ui.nodes.messages").Array())
				})
			}
		})

		t.Run("case=should create the identity when using android", func(t *testing.T) {
			fix.useRedirNoSessionTS()
			t.Cleanup(fix.useRedirTS)
			fix.disableSessionAfterRegistration()

			prevRPID := fix.conf.GetProvider(t.Context()).String(config.ViperKeyPasskeyRPID)
			prevOrigins := fix.conf.GetProvider(t.Context()).String(config.ViperKeyPasskeyRPOrigins)

			fix.conf.MustSet(t.Context(), config.ViperKeyPasskeyRPID, "www.troweprice.com")
			fix.conf.MustSet(t.Context(), config.ViperKeyPasskeyRPOrigins, []string{"android:apk-key-hash:S2RfNYgJmQiKgd6-sdbjW7phcL_OTP4vGE8L51Q2GB0"})
			t.Cleanup(func() {
				fix.conf.MustSet(t.Context(), config.ViperKeyPasskeyRPID, prevRPID)
				fix.conf.MustSet(t.Context(), config.ViperKeyPasskeyRPOrigins, prevOrigins)
			})

			for _, f := range flows {
				t.Run("type="+f, func(t *testing.T) {
					email := f + "-" + testhelpers.RandomEmail()
					userID := f + "-user-" + randx.MustString(8, randx.AlphaNum)

					expectReturnTo := fix.redirNoSessionTS.URL + "/registration-return-ts"
					actual, res, _ := fix.submitPasskeyAndroidRegistration(t, f, testhelpers.NewClientWithCookies(t), func(v url.Values) {
						values(email)(v)
						v.Set(node.PasskeyRegister, string(registrationFixtureSuccessAndroidResponse))
					}, withUserID(userID))

					if f == "spa" || f == "api" {
						if f == "spa" {
							expectReturnTo = fix.publicTS.URL
						}
						assert.Equal(t, email, gjson.Get(actual, "identity.traits.username").String(), "%s", actual)
						assert.False(t, gjson.Get(actual, "session").Exists(), "because the registration yielded no session, the user is not expected to be signed in: %s", actual)
					} else {
						assert.Equal(t, "null\n", actual, "because the registration yielded no session, the user is not expected to be signed in: %s", actual)
					}

					if f != "api" {
						assert.Containsf(t, res.Request.URL.String(), expectReturnTo, "%+v\n\t%s", res.Request, assertx.PrettifyJSONPayload(t, actual))
					}

					i, _, err := fix.reg.PrivilegedIdentityPool().FindByCredentialsIdentifier(t.Context(), identity.CredentialsTypePasskey, userID)
					require.NoError(t, err)
					assert.Equal(t, "aal1", i.InternalAvailableAAL.String)
					assert.Equalf(t, email, gjson.GetBytes(i.Traits, "username").String(), "%s", actual)
				})
			}
		})
	})

	t.Run("case=multi-schema registration", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		fix.enableSessionAfterRegistration()

		values := func(email string) func(v url.Values) {
			return func(v url.Values) {
				v.Set("traits.username", email)
				v.Set("traits.foobar", "bazbar")
				v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
				v.Del("method")
			}
		}
		invalidValues := func(email string) func(v url.Values) {
			return func(v url.Values) {
				v.Set("traits.username", email)
				v.Set("traits.foobar", "b")
				v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
				v.Del("method")
			}
		}

		fix.conf.MustSet(t.Context(), config.ViperKeyDefaultIdentitySchemaID, "does-not-exist")
		fix.conf.MustSet(t.Context(), config.ViperKeyIdentitySchemas, config.Schemas{
			{ID: "does-not-exist", URL: "file://./stub/profile.schema.json"},
			{ID: "advanced-user", URL: "file://./stub/registration.schema.json", SelfserviceSelectable: true},
		})

		for _, f := range flows {
			t.Run("type="+f, func(t *testing.T) {
				t.Run("should create the identity and a session and use the correct schema", func(t *testing.T) {
					email := testhelpers.RandomEmail()
					userID := f + "-user-" + randx.MustString(8, randx.AlphaNum)
					actual := fix.makeSuccessfulRegistration(t, f, fix.redirTS.URL+"/registration-return-ts", values(email), withUserID(userID), withInitFlowWithOption([]testhelpers.InitFlowWithOption{testhelpers.InitFlowWithIdentitySchema("advanced-user")}))

					prefix := getPrefix(f)

					assert.Equal(t, email, gjson.Get(actual, prefix+"identity.traits.username").String(), "%s", actual)
					assert.True(t, gjson.Get(actual, prefix+"active").Bool(), "%s", actual)

					i, _, err := fix.reg.PrivilegedIdentityPool().FindByCredentialsIdentifier(t.Context(), identity.CredentialsTypePasskey, userID)
					require.NoError(t, err)
					assert.Equal(t, email, gjson.GetBytes(i.Traits, "username").String(), "%s", actual)
					assert.Equal(t, "advanced-user", i.SchemaID, "%s", actual)
				})

				t.Run("registration should fail with invalid form data using the correct schema", func(t *testing.T) {
					email := testhelpers.RandomEmail()
					userID := f + "-user-" + randx.MustString(8, randx.AlphaNum)
					actual, res := fix.makeUnsuccessfulRegistration(t, f, fix.redirTS.URL+"/registration-return-ts", invalidValues(email), withUserID(userID), withInitFlowWithOption([]testhelpers.InitFlowWithOption{testhelpers.InitFlowWithIdentitySchema("advanced-user")}))

					if f == "browser" {
						assert.Equal(t, http.StatusOK, res.StatusCode, "%s", actual)
					} else {
						assert.Equal(t, http.StatusBadRequest, res.StatusCode, "%s", actual)
					}
					assert.Equal(t, int64(4000003), gjson.Get(actual, "ui.nodes.#(attributes.name==traits.foobar).messages.0.id").Int(), "%s", actual)
					assert.Equal(t, "length must be \u003e= 2, but got 1", gjson.Get(actual, "ui.nodes.#(attributes.name==traits.foobar).messages.0.text").String(), "%s", actual)
				})
			})
		}
	})

	t.Run("case=profile_first registration flow", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		fix.enableSessionAfterRegistration()
		fix.conf.MustSet(t.Context(), config.ViperKeySelfServiceRegistrationFlowStyle, "profile_first")

		values := func(email string) func(v url.Values) {
			return func(v url.Values) {
				v.Set("traits.username", email)
				v.Set("traits.foobar", "bazbar")
				v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
				v.Del("method")
			}
		}

		t.Run("case=successful registration", func(t *testing.T) {
			for _, f := range []string{"browser", "spa"} {
				t.Run("type="+f, func(t *testing.T) {
					email := testhelpers.RandomEmail()
					userID := f + "-profile-first-" + randx.MustString(8, randx.AlphaNum)
					actual := fix.makeSuccessfulRegistration(t, f, fix.redirTS.URL+"/registration-return-ts", values(email), withUserID(userID))

					prefix := getPrefix(f)
					assert.Equal(t, email, gjson.Get(actual, prefix+"identity.traits.username").String(), "%s", actual)
					assert.True(t, gjson.Get(actual, prefix+"active").Bool(), "%s", actual)

					i, _, err := fix.reg.PrivilegedIdentityPool().FindByCredentialsIdentifier(t.Context(), identity.CredentialsTypePasskey, userID)
					require.NoError(t, err)
					assert.Equal(t, email, gjson.GetBytes(i.Traits, "username").String(), "%s", actual)
				})
			}
		})
	})

	t.Run("case=unified registration flow", func(t *testing.T) {
		t.Parallel()
		fix := newRegistrationFixture(t)
		fix.enableSessionAfterRegistration()
		fix.conf.MustSet(t.Context(), config.ViperKeySelfServiceRegistrationFlowStyle, "unified")

		values := func(email string) func(v url.Values) {
			return func(v url.Values) {
				v.Set("traits.username", email)
				v.Set("traits.foobar", "bazbar")
				v.Set(node.PasskeyRegister, string(registrationFixtureSuccessResponse))
				v.Del("method")
			}
		}

		t.Run("case=successful registration", func(t *testing.T) {
			for _, f := range []string{"browser", "spa"} {
				t.Run("type="+f, func(t *testing.T) {
					email := testhelpers.RandomEmail()
					userID := f + "-unified-" + randx.MustString(8, randx.AlphaNum)
					actual := fix.makeSuccessfulRegistration(t, f, fix.redirTS.URL+"/registration-return-ts", values(email), withUserID(userID))

					prefix := getPrefix(f)
					assert.Equal(t, email, gjson.Get(actual, prefix+"identity.traits.username").String(), "%s", actual)
					assert.True(t, gjson.Get(actual, prefix+"active").Bool(), "%s", actual)

					i, _, err := fix.reg.PrivilegedIdentityPool().FindByCredentialsIdentifier(t.Context(), identity.CredentialsTypePasskey, userID)
					require.NoError(t, err)
					assert.Equal(t, email, gjson.GetBytes(i.Traits, "username").String(), "%s", actual)
				})
			}
		})
	})
}

func TestPopulateRegistrationMethod(t *testing.T) {
	ctx := context.Background()
	_, reg := pkg.NewFastRegistryWithMocks(t)

	ctx = testhelpers.WithDefaultIdentitySchema(ctx, "file://stub/registration.schema.json")
	ctx = contextx.WithConfigValue(ctx, config.ViperKeyPasskeyRPDisplayName, "localhost")
	ctx = contextx.WithConfigValue(ctx, config.ViperKeyPasskeyRPID, "localhost")

	s, err := reg.AllRegistrationStrategies().Strategy(identity.CredentialsTypePasskey)
	require.NoError(t, err)

	fh, ok := s.(registration.FormHydrator)
	require.True(t, ok)

	toSnapshot := func(t *testing.T, f node.Nodes, except ...snapshotx.Opt) {
		t.Helper()
		// The CSRF token has a unique value that messes with the snapshot - ignore it.
		f.ResetNodes("csrf_token")
		snapshotx.SnapshotT(t, f, append(except, snapshotx.ExceptNestedKeys("nonce", "src"))...)
	}

	newFlow := func(ctx context.Context, t *testing.T) (*http.Request, *registration.Flow) {
		r := httptest.NewRequest("GET", "/self-service/registration/browser", nil)
		r = r.WithContext(ctx)
		t.Helper()
		f, err := registration.NewFlow(reg, r, flow.TypeBrowser)
		f.UI.Nodes = make(node.Nodes, 0)
		require.NoError(t, err)
		return r, f
	}

	newFlowWithType := func(ctx context.Context, t *testing.T, flowType flow.Type) (*http.Request, *registration.Flow) {
		r := httptest.NewRequest("GET", "/self-service/registration/browser", nil)
		r = r.WithContext(ctx)
		t.Helper()
		f, err := registration.NewFlow(reg, r, flowType)
		f.UI.Nodes = make(node.Nodes, 0)
		require.NoError(t, err)
		return r, f
	}

	t.Run("method=PopulateRegistrationMethod", func(t *testing.T) {
		t.Run("type=browser", func(t *testing.T) {
			r, f := newFlowWithType(ctx, t, flow.TypeBrowser)
			require.NoError(t, fh.PopulateRegistrationMethod(r, f))
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})
		t.Run("type=api", func(t *testing.T) {
			r, f := newFlowWithType(ctx, t, flow.TypeAPI)
			require.NoError(t, fh.PopulateRegistrationMethod(r, f))
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})
	})

	t.Run("method=PopulateRegistrationMethodProfile", func(t *testing.T) {
		r, f := newFlow(ctx, t)
		require.NoError(t, fh.PopulateRegistrationMethodProfile(r, f))
		toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
	})

	t.Run("method=PopulateRegistrationMethodCredentials", func(t *testing.T) {
		t.Run("type=browser", func(t *testing.T) {
			r, f := newFlowWithType(ctx, t, flow.TypeBrowser)
			require.NoError(t, fh.PopulateRegistrationMethodCredentials(r, f))
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})
		t.Run("type=api", func(t *testing.T) {
			r, f := newFlowWithType(ctx, t, flow.TypeAPI)
			require.NoError(t, fh.PopulateRegistrationMethodCredentials(r, f))
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})
	})

	t.Run("method=idempotency", func(t *testing.T) {
		r, f := newFlow(ctx, t)

		var snapshots []node.Nodes

		t.Run("case=1", func(t *testing.T) {
			require.NoError(t, fh.PopulateRegistrationMethodProfile(r, f))
			snapshots = append(snapshots, f.UI.Nodes)
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})

		t.Run("case=2", func(t *testing.T) {
			require.NoError(t, fh.PopulateRegistrationMethodCredentials(r, f))
			snapshots = append(snapshots, f.UI.Nodes)
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})

		t.Run("case=3", func(t *testing.T) {
			require.NoError(t, fh.PopulateRegistrationMethodProfile(r, f))
			snapshots = append(snapshots, f.UI.Nodes)
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})

		t.Run("case=4", func(t *testing.T) {
			require.NoError(t, fh.PopulateRegistrationMethodCredentials(r, f))
			snapshots = append(snapshots, f.UI.Nodes)
			toSnapshot(t, f.UI.Nodes, snapshotx.ExceptPaths("1.attributes.value"))
		})

		t.Run("case=evaluate", func(t *testing.T) {
			assertx.EqualAsJSON(t, snapshots[0], snapshots[2])
			assertx.EqualAsJSONExcept(t, snapshots[1], snapshots[3], []string{"3.attributes.nonce"})
		})
	})
}

// TestPopulateRegistrationMethodWithoutDisplayNameTrait is a regression test:
// when the passkey method is enabled but the identity schema flags no trait as
// a passkey display name or WebAuthn identifier and offers no untitled
// fallback trait, the passkey form hydrators must skip their UI nodes instead
// of failing the whole registration flow.
func TestPopulateRegistrationMethodWithoutDisplayNameTrait(t *testing.T) {
	ctx := context.Background()
	_, reg := pkg.NewFastRegistryWithMocks(t)

	ctx = testhelpers.WithDefaultIdentitySchema(ctx, "file://stub/registration-no-passkey-titled.schema.json")
	ctx = contextx.WithConfigValue(ctx, config.ViperKeyPasskeyRPDisplayName, "localhost")
	ctx = contextx.WithConfigValue(ctx, config.ViperKeyPasskeyRPID, "localhost")

	s, err := reg.AllRegistrationStrategies().Strategy(identity.CredentialsTypePasskey)
	require.NoError(t, err)

	fh, ok := s.(registration.FormHydrator)
	require.True(t, ok)

	newFlow := func(t *testing.T, flowType flow.Type) (*http.Request, *registration.Flow) {
		t.Helper()
		r := httptest.NewRequest("GET", "/self-service/registration/browser", nil)
		r = r.WithContext(ctx)
		f, err := registration.NewFlow(reg, r, flowType)
		require.NoError(t, err)
		f.UI.Nodes = make(node.Nodes, 0)
		return r, f
	}

	assertNoPasskeyNodes := func(t *testing.T, nodes node.Nodes) {
		t.Helper()
		for _, n := range nodes {
			assert.NotEqual(t, node.PasskeyGroup, n.Group, "unexpected passkey node: %+v", n)
			assert.NotEqual(t, node.WebAuthnScript, n.ID(), "unexpected WebAuthn script node: %+v", n)
		}
	}

	t.Run("method=PopulateRegistrationMethod", func(t *testing.T) {
		for _, ft := range []flow.Type{flow.TypeBrowser, flow.TypeAPI} {
			t.Run("type="+string(ft), func(t *testing.T) {
				r, f := newFlow(t, ft)
				require.NoError(t, fh.PopulateRegistrationMethod(r, f))
				assertNoPasskeyNodes(t, f.UI.Nodes)
			})
		}
	})

	t.Run("method=PopulateRegistrationMethodCredentials", func(t *testing.T) {
		r, f := newFlow(t, flow.TypeBrowser)
		require.NoError(t, fh.PopulateRegistrationMethodCredentials(r, f))
		assertNoPasskeyNodes(t, f.UI.Nodes)
	})

	t.Run("method=PopulateRegistrationMethodProfile", func(t *testing.T) {
		r, f := newFlow(t, flow.TypeBrowser)
		require.NoError(t, fh.PopulateRegistrationMethodProfile(r, f))
		assertNoPasskeyNodes(t, f.UI.Nodes)
	})
}

// TestRegistrationWithoutDisplayNameTrait initializes registration flows
// end-to-end with the passkey method enabled and an identity schema that has
// no display-name candidate trait. Flow creation must succeed and offer the
// remaining methods; only the passkey UI nodes are dropped.
func TestRegistrationWithoutDisplayNameTrait(t *testing.T) {
	t.Parallel()

	fix := newRegistrationFixture(t, configx.WithValues(
		testhelpers.DefaultIdentitySchemaConfig("file://./stub/registration-no-passkey-titled.schema.json")))

	assertFlow := func(t *testing.T, f *kratos.RegistrationFlow) {
		t.Helper()
		var groups []string
		for _, n := range f.Ui.Nodes {
			groups = append(groups, n.Group)
			assert.NotEqual(t, "passkey", n.Group, "unexpected passkey node: %+v", n)
		}
		assert.Contains(t, groups, "password")
	}

	t.Run("type=browser", func(t *testing.T) {
		client := testhelpers.NewClientWithCookies(t)
		f := testhelpers.InitializeRegistrationFlowViaBrowser(t, client, fix.publicTS, false, false, false)
		assertFlow(t, f)
	})

	t.Run("type=spa", func(t *testing.T) {
		client := testhelpers.NewClientWithCookies(t)
		f := testhelpers.InitializeRegistrationFlowViaBrowser(t, client, fix.publicTS, true, false, false)
		assertFlow(t, f)
	})

	t.Run("type=api", func(t *testing.T) {
		f := testhelpers.InitializeRegistrationFlowViaAPI(t, testhelpers.NewDebugClient(t), fix.publicTS)
		assertFlow(t, f)
	})
}